During recent illness, I too have this phlegm issues, but lucky for me, after three doses of antibiotic, it went away.
My aunt read from somewhere that drinking this Ginger and garlic juice concoction works and tried it on my uncle who is also suffering from this phelgm issue and it seems to take effect for him.
So today, I am making some for my mom and hopefully it helps her.
Findings: Mom developed ulcer after drinking a few times. Thus I recommended she reduced the quantity to half. So far, seems to be okay.
What you need:
1.5 bulb garlic
Skin ginger and cut into small chunks.
Remove skin of garlic.
Using cold press juicer, juice ginger and garlic.
In a pot, bring ginger and garlic juice into a simmer. Do not boil.
Then let it cool and store in fridge.
Put two tbsp of ginger/garlic mixture into a glass of warm water and drink daily.